2. A solar-type star is seen with an apparent magnitude my = 30. Assuming that there is no extinction along the line-of-sight, how far away is the star? What is its distance if a visual extinction of Av = 0.3 magnitudes is present?

Q: Problem: An ice skater moving at 9.0000 m/s coasts to a halt in 95.00 meters on an ice surface. What…

A: Given : vo = 9.0000 m/s v = 0 m/s (because finally skater comes to halt) s = 95.00 m g = 9.807 m/s2…

Q: Two blocks are connected by a (massless) string that passes over a (massless, frictionless) pulley…

A: Visualize the Problem:

Q: The spacing of ruled lines on a diffraction grating is 1,638 nm. The grating is illuminated at…

A: Given data d=1638 nmλ1=700 nmλ2=391.6 nm Here d is the spacing between the lines. While λ is the…

Q: 02 T3 M

A:

Q: Two blocks connected by a rope of negligible mass are being dragged by a horizontal force as in the…

A: Given: m1=12 kgm2=16 kgF=60 N The free-body diagram of the objects is given below.

Q: Pluto eats 1.26 pounds of dry dog food per day. The dry food is available in 1.5 lb sacks, priced…

A: Pluto eats  of dry dog food per day. Using the conversion factor,  we can convert this to kilograms:

Q: A sign is hanging as shown. If m = 9.7 kg, 0, = 75°, and 02 = 35°, then find the tension in each of…

A:

Q: Table R(Q) im(A) 100 0.030 200 0.005 330 0.006 100 0.019 200 0.005 3. Using Kirchhoff's Rules,…

A:

Q: A 140N horizontal force is needed to pull a 60.0kg box across the horizontal floor at constant…

A:

Q: A boxer punched a punching bag weighing 300 N horizontally with a force of 200 N. The c.g. of the…

A:

Q: 1. You are trying to lift a box of weight W' vertically off the floor. You apply a force, Fup, on…

A: Given quantities: Weight of the box = W Applied force = Fup The normal force on the block = N   It…

Q: A 3.0 kg puck slides due east on a horizontal frictionless surface at a constant speed of 4.5 m/s.…

A:

Q: a.  moves downward with constant speed.  b.  moves upward with constant speed.  c.  speed down.…

A: Given:-  The apparent weight of a fish in an elevator is maximum when the elevator. Find:-  the…

Q: 20. The block has a mass of 60 kg. The coefficient of static friction is 0.3. The minimum force, P…

A: Given that mass of the block is m=60kg the angle of inclination from the horizontal is α=40o A force…

Q: A woman driving a 2000 kg car at 15 m/s fully applies the brakes 50. m from a stoplight. If the car…

A: Given data: Mass (m) = 2000 kg Initial velocity (v0) = 15 m/s Final velocity (Vf) = 0 m/s Brakes…

Q: A pig has weight 500 N. It stands on a scale in an elevator, which reads 530 N. Which is correct? A.…

A: Given,  Actual Weight, W = mg = 500 N  Apparent weight A = 530 N

Q: A girl is using a rope to pull a box that weighs 300 lb across a level surface with constant…

A: Given data :Weight of box, w = 300 lbAngle = 30°Tension in the rope, T = 100 lb which represents the…

Q: 13. 54-kg box is sitting on the floor of a level railroad car which is moving forward with a speed…

A: mass of box = 54 kg speed = 25 m/sa = 5.6 m/s2

Q: A child of mass 43 kg stands on a scale inside an elevator. Select one or more: A. The scale…

A: Consider the acceleration of the elevator be a, and the speed of the elevator be v. Apply Newton’s…

Q: 14. Compute the minimum distance that a truck slides on a horizontal asphalt road if it is traveling…

A: Given,u=20 m/sμs=0.50m=8000 kg

Q: 7. You put a box on a skateboard and give it a quick push with a certain force. It starts to move.…

A: The correct answer is option (e)  Speed up for a little while, go at a constant speed for a while,…